Examine source code of Video Speed Master

{
  "manifest_version": 3,
  "name": "Video Speed Master",
  "version": "1.0.0",
  "description": "A minimalist video playback speed controller. Adjust playback speed using a slider, preset buttons, or direct numeric input. Works on any website with HTML5 video.",
  "action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "scripting",
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "video-speed-master@addon",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}